中国科学院机构知识库网格系统: 检索

禾本科作物小麦能吸收和积累聚苯乙烯塑料微球 期刊论文 OAI收割
科学通报, 2020, 卷号: 65.0, 期号: 020, 页码: 2120-2127
作者: 李瑞杰; 李连祯; 张云超; 杨杰; 涂晨

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收藏 | 浏览/下载：29/0 | 提交时间：2021/06/16

小麦幼苗聚苯乙烯微球砂培吸收积累

食用蔬菜能吸收和积累微塑料 期刊论文 OAI收割
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者: 李连祯; 周倩; 尹娜; 涂晨; 骆永明

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收藏 | 浏览/下载：143/0 | 提交时间：2020/06/17

微塑料生菜聚苯乙烯微球吸收积累健康风险 microplastics lettuce polystyrene microbeads uptake accumulation human health risk Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.

干旱胁迫下氮素对不同基因型小麦根系活力和生长的调控 期刊论文 OAI收割
麦类作物学报, 2017, 卷号: 36, 期号: 6, 页码: 820-827
作者: 王秀波; 上官周平

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收藏 | 浏览/下载：21/0 | 提交时间：2018/06/28

小麦干旱胁迫根系活力活跃吸收面积根冠比氮素积累量

赤泥、骨炭和石灰对玉米吸收积累As、Pb和Zn的影响 期刊论文 OAI收割
农业环境科学学报, 2013, 卷号: 3, 期号: 1, 页码: 456-462
黄益宗; 郝晓伟

收藏 | 浏览/下载：50/0 | 提交时间：2015/01/28

土壤重金属改良剂吸收积累玉米

膜下滴灌水氮耦合对棉花干物质积累和氮素吸收及水氮利用效率的影响/Coupling effects of water and nitrogen on dry matter accumulation,nitrogen uptake and water-nitrogen use efficiency of cotton under mulched drip irrigation[J] 期刊论文 OAI收割
植物营养与肥料学报, 2011, 卷号: 17, 期号: 1, 页码: 160-165
作者: 谢志良; 田长彦; XIE Zhi-liang; TIAN Chang-yan; 中国科学院绿洲生态与荒漠重点实验室,新疆乌鲁木齐,830011

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收藏 | 浏览/下载：18/0 | 提交时间：2017/12/29

膜下滴灌棉花干物质积累氮素吸收水氮利用效率

不同品种大豆对As吸收积累和分配的影响 期刊论文 OAI收割
农业环境科学学报, 2006, 卷号: 1, 期号: 6, 页码: 1397-1401
黄益宗; 朱永官; 胡莹; 刘云霞

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大豆砷土壤吸收积累

有机污染物在土壤-植物系统中迁移的机制及影响因素研究 学位论文 OAI收割
博士, 北京: 中国科学院研究生院, 2006
苏玉红

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植物吸收积累迁移机制有机污染物微生物 Plant uptake and accumulation transport mechanisms organic contaminant microbe

盐碱胁迫对燕麦水势、干物质积累率以及K+、Na+选择性吸收的影响 期刊论文 OAI收割
农业系统科学与综合研究, 2006, 卷号: 22, 期号: 2, 页码: 105-108
王波; 宋凤斌

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盐碱胁迫燕麦水势干物质积累率 K+、Na+的选择性吸收

稀土元素在植物中的分异及其概念模型 期刊论文 OAI收割
中国科学C辑:生命科学, 2006, 期号: 4, 页码: 312-319
作者: 丁士明; 梁涛; 张自立; 黄泽春; 谢亚宁

收藏 | 浏览/下载：19/0 | 提交时间：2015/12/25

稀土元素分异四重效应生物积累 X射线吸收光谱(XAS) 纳米Ti02

稀土元素在植物中的分异及其概念模型 中文期刊论文 OAI收割
2006
作者: 梁涛

收藏 | 浏览/下载：22/0 | 提交时间：2012/05/23

稀土元素分异四重效应生物积累 X射线吸收光谱(XAS) 纳米Ti02